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Crystaline White Dwarfs

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Wade Hampton III

  • Posts: 1684
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Crystaline White Dwarfs

PostSun Jan 13, 2019 9:58 pm

January 9, 2019, University of Warwick...
59113
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The first direct evidence of white dwarf stars solidifying into crystals has been
discovered by astronomers at the University of Warwick, and our skies are filled
with them. Observations have revealed that dead remnants of stars like our Sun,
called white dwarfs, have a core of solid oxygen and carbon due to a phase
transition during their lifecycle similar to water turning into ice but at
much higher temperatures. This could make them potentially billions of years
older than previously thought.

Read more at: https://phys.org/news/2019-01-astronome ... s.html#jCp
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Wade Hampton III

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Re: Crystaline White Dwarfs

PostSat Jan 19, 2019 4:08 pm

Michael Soiron, PHD Physics, RWTH Aachen University
(2016) wants to know.....

If a 1 cm diameter solid diamond ball hit the earth at
99.9999999999999999999999999999999999% light speed,
what would happen to the surrounding planets?

If I count all the 9s correctly, the ball would have
an energy of 2.2*10^25 joules. About 5 petatons of
TNT equivalent. That is about the estimated energy
of the Chicxulub asteroid impact. So it would likely
trigger a mass extinction event on the Earth but have
no effect at all on other planets.

:!:

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